214公里冬季超耐力赛期间的能量和液体平衡:一个案例研究
Kyle W Wehmanen1, Brent C Ruby2, Timothy C Shriver3
1Department of Kinesiology & Integrative Physiology, Michigan Technological University, Houghton, MI, USA.
Journal of applied physiology (Bethesda, Md. : 1985)
|February 6, 2026
概括
这项研究测量了骑自行车者在寒冷的超耐力赛期间的总能耗 (TEE) 和水循环 (rH2O). 结果显示,与其他事件相比,高TEE和rH2O,在寒冷条件下有显著的流体循环.
科学领域:
- 运动生理学 运动生理学
- 环境生理学环境生理学
- 人类表现的人类表现.
背景情况:
- 总能耗 (TEE) 和水循环 (rH2O) 的上限已知用于在中等温度下的超耐力赛事.
- 然而,在寒冷天气 (<0°C) 中连续单日活动期间的TEE和rH2O极限仍然未确定.
- 箭头超级,一个臭名昭著的寒冷的北美种族,提供了一个独特的环境来调查这些生理需求.
研究的目的:
- 在寒冷条件下 (<0°C) 一天超耐力赛期间确定TEE和rH2O的上限.
- 将极端寒冷天气超耐力骑自行车的生理需求与其他耐力活动的现有数据进行比较.
- 为参加寒冷天气耐力赛事的运动员提供有关能量和流体平衡的见解.
主要方法:
- 使用一个案例研究方法,专注于2025年Arrowhead Ultra (自行车手) 的男性获胜者.
- 总能耗 (TEE) 和水循环 (rH2O) 用双标记水方法进行评估.
- 记录了总能量和流体摄入量,以及平均心率,以评估能量和流体平衡.
主要成果:
- 这位骑自行车的TEE为63.9 MJ (15,273 kcals),在17.9小时的比赛中,在-13°C至-1°C的温度下,他的TEE为17.7 L.
- 骑自行车的TEE和rH2O与运动员在更广泛的温度范围内 (3-34°C) 与类似事件中的运动员相似.
- 值得注意的是,骑自行车的rH2O比其他寒冷天气超耐力活动 (-25°C至 -19°C) 的运动员报告的高.
结论:
- 在寒冷的天气中持续进行单日超耐力活动,会产生很高的总能耗和水循环.
- 对于超耐力活动来说,生理需求,特别是水循环,在极寒中可能比以前理解的要大.
- 这些发现对耐力训练策略和在寒冷环境中性能优化有重大影响.
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